RT Journal Article
T1 Composite Films with UV-Barrier Properties Based on Bacterial Cellulose Combined with Chitosan and Poly(vinyl alcohol): Study of Puncture and Water Interaction Properties
A1 Cazón Díaz, Patricia
A1 Vázquez Vázquez, Manuel
A1 Velázquez, Gonzalo
K1 Biopolymers
K1 Cellulose Optical properties Polymers Solubility
K1 Cellulose
K1 Optical properties
K1 Polymers
K1 Solubility
AB The present study describes the preparation and characterization of composite films from bacterial cellulose produced by Komagataeibacter xylinus combined with poly(vinyl alcohol) and chitosan. The unique bacterial cellulose structure provides an expanded surface area with high porosity, easing the combination with other soluble polymers by dipping. This blending method effectively reinforces the bacterial cellulose structure. Toughness, puncture strength, water solubility, and swelling degree were measured to assess the effect of poly(vinyl alcohol) and chitosan on the analyzed properties. The morphology and optical and thermal properties were evaluated by scanning electron microscopy, UV–vis spectral analysis, thermogravimetry, and differential scanning calorimetry, respectively. Results showed that the films have good UV-barrier properties and high thermal stability. Toughness values ranged from 0.26 to 7.18 MJ/m3, burst strength ranged from 58.88 to 3234.62 g, and distance to burst ranged from 0.39 to 3.24 mm. Poly(vinyl alcohol) affected the water solubility and increased the swelling degree.
PB ACS Publications
SN 1525-7797
YR 2019
FD 2019-03-29
LK https://hdl.handle.net/10347/38514
UL https://hdl.handle.net/10347/38514
LA eng
NO Cazón, P., Vázquez, M. and Velazquez, G. (2019) ‘Composite films with UV-barrier properties based on bacterial cellulose combined with chitosan and poly(vinyl alcohol): Study of puncture and water interaction properties’, Biomacromolecules, 20(5), pp. 2084–2095. doi:10.1021/acs.biomac.9b00317.
NO This document is the Accepted Manuscript version of a Published Work that appeared in final form in Biomacromolecules, copyright © 2019 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.biomac.9b00317
NO A grant from CONACYT (Mexico) to P.C. (no. 435948) is gratefully acknowledged. The financial support for this project was provided by Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia (ES) (project no. ED431B 2016/009). We acknowledge the use of RIAIDT-USC analytical facilities.
DS Minerva
RD 28 abr 2026